Read this manual carefully before use, and retain it forfuture reference.

Product Overview
Front
Top Ventilation HolesNote:
Do not obstruct the ventilation
holes when installing or using
the monitor.
Lanyard HoleNote:
To use the lanyard hole,remove the back cover of themonitor first.

Display
Rear
Rear Ventilation HolesNote:
Do not obstruct theventilation holes when
installing or using themonitor.
Adhesive Area
Cover Opening01

Accessory
Adhesive Sticker

Installation
Installing the Battery
Remove the cover from thecover opening of the monitor,and place a CR2032 battery
with the positive (+) sidefacing upwards, then reinstall
the cover.
Note: Battery is not included
and sold separately.
You can use and install your monitor in the following
ways:a.

Placing: Directly place the monitor on the surfaceof the furniture such as table, bookshelf.

b.

Using the adhesive
sticker: Remove therelease liner from one
side of the adhesive
sticker to stick it on theback of the monitor,
then remove therelease liner from theother side to stick it at
the desired place on
the wall.

02c.

Hanging: Remove the back cover of the monitor,and lead the lanyard's loop through the hole andaround the hook. Reinstall the back cover, thenhang the monitor.
Note: Lanyard is not included and sold separately.

Display Description
Temperature

Data Transfer Symbol
Temperature Unit
Humidity
Low Battery Symbol

Comfort Level Symbol

03Symbol Instructions
Temperature
Less than 19°C
Humidity

Between 19°C
and 27°C

More than 27°C

Less than 20%
Between 20%
and 85%More than 85%

Low Battery Notification
When the battery is at a low level,
this symbol appears on thedisplay. Please replace thebattery.

Low Battery Symbol

Smart Connection
Connecting with the Mi Home/Xiaomi Home App
This product works with the Mi Home/Xiaomi Homeapp*. Control your device with Mi Home/Xiaomi Homeapp.
Scan the QR code to download and install the app. Youwill be directed to the connection setup page if the appis installed already. Or search for "Mi Home/Xiaomi
Home" in the app store to download and install it.

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Open the Mi Home/Xiaomi Home app, tap "+" on theupper right, and then follow the instructions to add
your device.
* The app is referred to as Xiaomi Home app in Europe(except for Russia). The name of the app displayed onyour device should be taken as the default.
Note: The version of the app might have been
updated, please follow the instructions basedon the current app version.

Connect with Other Devices
Make sure your temperature and humidity monitor isconnected with Mi Home/Xiaomi Home app. Tap " "on the upper right corner of the monitor's userinterface, then follow the on-screen instructions toconnect with other smart devices.

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Mi Temperature and Hu

Temperature

33.4℃

Humidity48%

Temperature（℃）
30.1℃

33.2℃

31.6℃

Humidity（%）
33.5℃
29.2℃

Note: The monitor can only connect with thesedevices supporting the function of Mi Bluetooth
Gateway. Please contact the customer service
for detailed information.

Restoring Factory Settings
Remove the back cover when the monitor is working
normally, and use a conductive material to connect thetwo contact points above the battery for about 5–8
seconds. Once the monitor restarts, the factory
settings have been restored and previously saved data
has been cleared.

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Daily Care & Maintenance
Please prevent water from getting into the monitor
when cleaning it.
When the surface of the monitor is dirty, it can bewiped clean using a damp soft cloth with someneutral detergent.

Precautions
Do not immerse the ventilation holes into any liquid.
Do not remove the monitor from a wall with force if
it is attached with the adhesive sticker, so as to
avoid damage to the wall or the monitor.
This monitor is not suitable for use in environmentswith temperatures below 0°C. Please keep it awayfrom harsh environments with high temperatures orhigh humidity.
This monitor is designed to facilitate a healthy
lifestyle, but should not be used as a measuring tool.

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Specifications
Name: Mi Temperature and Humidity Monitor 2Model: LYWSD03MMC
Materials: ABS & PMMA
Dimensions: 43 × 43 × 12.5 mm
Net Weight: 18 g
Operating Voltage: DC 2.5–3 V
Battery Type: CR2032 (Not included)
Wireless Connectivity: Bluetooth 4.2 Bluetooth Low Energy
Frequency Range: 2402 MHz–2480 MHz
Maximum Output Power: 4.16dBm
Temperature Measurement Range: 0°C to 60°C
Temperature Resolution: 0.1°C
Humidity Measurement Range: 0–99% RH
Humidity Resolution: 1% RH
Note: Illustrations of product, accessories, and userinterface in the user manual are for reference purposes
only. Actual product and functions may vary due toproduct enhancements.

Hereby, Miaomiaoce Technology (Beĳing)Co., Ltd. declares that the radio equipment
type LYWSD03MMC is in compliance with
Directive 2014/53/EU. The full text of the EU declarationof conformity is available at the following internet
address: http://www.mi.com/global/service/support/declaration.html

08All products bearing this symbol are waste
electrical and electronic equipment (WEEE asin directive 2012/19/EU) which should not bemixed with unsorted household waste.
Instead, you should protect human health and theenvironment by handing over your waste equipment toa designated collection point for the recycling of waste
electrical and electronic equipment, appointed by thegovernment or local authorities. Correct disposal andrecycling will help prevent potential negative
consequences to the environment and human health.
Please contact the installer or local authorities for more
information about the location as well as terms andconditions of such collection points.
Hereby, Miaomiaoce Technology (Beĳing)Co., Ltd. declares that the radio equipment
type LYWSD03MMC is in compliance withRadio Equipment Regulations 2017.
The product is in compliance with comply UK PSTI
regulations, the full text of the UK declaration ofconformity is availableat the following internet address:
https://www.mi.com/uk/service/support/declaration.html
EU REP.
Xiaomi Technology Netherlands B.V.
Prinses Beatrixlaan 582, 2595BM, The Hague, The
Netherlands contact@support.mi.com
UK REP.
Xiaomi Technology UK Limited
Davidson House, Forbury Square, Reading, Berkshire
RG1 3EU contact@support.mi.com
User Manual Version: V1.3

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